Well Triple7, my brother does indeed shoot the big copper blobs. And they hurt like heck! I developed a bad flinch as a kid - started shooting too much gun way too soon in life. (My first groundhog gun was Grandpappy's double-barrelled 12 guage, which I started carrying at the age of 8!) I know now that I'm sensitive to recoil, so the prospect of shooting such a kicking mule doesn't appeal to me at all. 70 grains of black powder under a patched round ball is gentle enough that I can shoot it all day in my Hawken and it's plenty enough for whitetails too! My brother has seen the wisdom in this approach and has decided 100 grains of Pyrodex is plenty enough for him, too! By the way, the muzzlebrake on his rifle is quite effective in taming recoil, but it still can't make the 150 grain loads bearable. The recipe for that mulekicking load should be three 50 grain Pyropoop pellets, one Powerbelt bullet, two Tylenol Extra Strength tablets and one trip to your favourite masseuse, chiropracter or physiotherapist. Only half the ingredients are for the gun, while the other half are for the shooter!